/**
 * TODO file description
 */

#ifndef BLUEPILLTROUBA_APP_GUI_H
#define BLUEPILLTROUBA_APP_GUI_H

#include "cmsis_os2.h"
#include <stdbool.h>
#include "gui_event.h"

extern char stmp[100];

void app_task_gui(void *argument);


/**
 * Screen callback type. The event is either INIT, PAINT, or one of the input events.
 */
typedef void (*screen_t)(GuiEvent event);



/** Input beep (push or knob turn) */
void input_sound_effect();

/** Switch to a different screen. Handles initial push state handling (so release
 * does not cause a "click" event).
 *
 * @param pScreen - screen to switch to
 * @param init - call the INIT event immediately after
 */
void switch_screen(screen_t pScreen, bool init);

void request_paint();

uint32_t push_time();

// prototypes for screen handlers

void screen_home(GuiEvent event);
void screen_manual(GuiEvent event);
void screen_manual_menu(GuiEvent event);
void screen_calibration(GuiEvent event);

struct State {
    /// Latest oven temp readout
    float oven_temp;
    //float soc_temp;

    // manual mode controls

    /// Currently set target temp
    int set_temp;
    /// Heater enabled status (only visual)
    bool heater_enabled;

    /// Prescaller for the knob, CCW direction.
    /// Event increments this counter and resets the other. Knob turn event is generated on overflow.
    bool down_prescaller;
    /// Prescaller for the knob, CW direction
    /// See `down_prescaller`
    bool up_prescaller;

    /// Curent status of the push button
    bool pushed;
    /// Repaint was requested from the screen code
    bool paint_needed;

    /// Timestamp of the last GUI tick
    uint32_t last_tick_time;
    /// Timestamp when the button was pushed
    uint32_t push_time;
    /// Timestamp when we last read oven temperature for display
    uint32_t last_read_temp_time;

    /// true if the button is still held since init (i.e. the push action should not work as "enter")
    bool initial_pushed;

    /// Pointer to the currently active screen func
    screen_t screen;
};

extern struct State s_app;

#endif //BLUEPILLTROUBA_APP_GUI_H